Draft attachment for automobiles.



B. URQUHART. DRAFT ATTACHMENT FOR AUTOMOBILES.

APPLICATION FILED NOV.7,1910.

1,076,799 Patented 0011.28, 1913.v

ime saga T 31mm wi'oz a, ivy V T ,7 v

I mumm tinrrnn STAjllis PATENT OFFICE.

BENJAMIN URQUHART, OF PLAINFIELD, NEW JERSEY.

DRAFT ATTACHMENT FOR AUTOMOBILES.

' To (1. 217mm it may conceive: I

Be it known that I, BENJAMIN UR UHART, cf l laintleld, in the county ofUnion and State of Xew Jersey, have invented certain new and usefulImprovements in Draft Attachments for Automobiles; and I do herebydeclare the following to be a full,.clear, and exactv description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention contemplates an improved draft attachment for automobilesadapted for gaining traction when the wheels of the machine havebecomej. stalled "or embedded 1n muddy ruts' p Devices havingsubstantially the same object in View have heretofore been devised, butso far as I amaware, they have all contemplated expensive. attachingdevices, which, in addition to being Complicated in construction, havebeen designed for engag ing the rim of the traction wheel. When thiswheel is embedded in a roadway it is usually impossibleto reach the rimof the wheel for the purpose of attaching the device.

The primary object of my invention is to provide simple and efi'ectivemechanism,

. which maybe cheaply manufactured and readily carried on the. runningboard'of the .machine and which is secured to a traction tion of theirlength and movable longitudi' nally thereof. I have shown the armspivoted as at 5 to a spider 6 having a centralopening to receive a bolti formed with a square head 8. The surface surrounding the opening maybe formed with a recess as indi ated at?) to receive the head 8 andpre-' vent the bolt from turning. The hollow. d1 .nn l close at itsouter end by a head 16 throu h which the bolt 7 passes. By

means of a nut 12, tapped on the b lt, the

effective and will stand considerable sti Specification of LettersPatent.

Application filed November 7, 1910.

Patented Oct. 28, 1913. Serial No. 591,161.

drum may be moved inwardupon the arms, the nut bearing against the headof the drum, and upon loosening this nut the drum may be moved outwardfrom. the arms by hand.

.l have shown the arms 3 curved outward longitudinally so that when theparts are assembled these curved portions of the arms collectivelyconstitute a cam surface to receive the drum. Owing to the pivotal con--nections between the arms and the spider the former may be broughttogether or spread apart to any desired extent, and have shown each ofthe arms formed with an abrupt curve at its free end to form a hook 14.

It will be noted that when the device is at tachedto a traction Wheelthe arrr are clustered around the hub and ens ge the inner ends of theirrespective spoli The POSltlVG engagement thus provided very When thearms have been placed in posi tion upon the traction'wheel, asdescribed, the drum 4 is slipped over the arms and the nut 12 turned tomove the'drum inward.

This movement causes the drum to pass over the curved surface of thearms effectively binding the drum and arms together by fric tionalcontact and also causing the hoottcd ends of the arms to bear againstthe inner ends of the spokes.

With the parts thus assembled, a rope or cable 17 maybe Wound upon thedrum and secured to a stake 18 driven into the ground in advance of thevehicle, after which starting themotor and the rotation of the trac tionwheel will cause the rotation of the wheel to pull against a stationaryobject and tend to pull the machine from the rut. As indicated in Fig.1, I preferably attach pulley 19 to the stake 18 and pass the able 1"?over this pulley and secure it to the front axle of the car. Thisresults in the pull being exerted directly upon the front of the car andinsures forward movement, whereas if only the traction device wereconnected to the stake, the pull would tend to more the machinesidewise.

I claim as my invention p 1.1m a draft attachmentfor auton'iobiletraction wheels, a plurality of arms adapted to engage the inner ends ofthe spokes of the Wheel and extend outward therefrom, at sub stantiallyright angles tot-he plane of the lid - traction wheels a plurality 0'arm ivheeifand a drum movabie ionti on saici arms. i

- 2. In a draft aizsachment for an;

to constitute a cam suz 'iace and na l tremlt es adapted to engage 1 ofthe spokes of the Wheei, a drum mounted on said arms,a11d means formoving said havin a nut bearinm a 'ainst the end. of s..

I v o 3 drum on said arms to bind it mereto by fric- .t10na1 engagementwith said cam suriace.

3. In a draft attachment for automobile traction wheels, av mum a spiderWithin said drum, a plurality of arms "pivotaiiy mounted on said spider,said arms being each carver outward longitudinally and formed with ahooked extremity adapted to engage the spokes of the Wheel whereby saidarms coiiectiveiy surround the hub, and means for moving said drumlongitudinally over said arms toclamp it thereon.

4:. In a draft attachment for automobiie traction wheels, adrum ciose'eiat its outer end, a spider Within'said drum, a threaded boit connectingsaid cirum ans-c spicieiy J rising a there, a be *iai lyiiu'ough saiddream 3;

connecung saiii-boit with a trac- I its hub, moi means for bimiing A. bymoving: iongimdinaiiy over bole and COHDECiJlIig means. A drafattachment 1201" automobile 35 "faction wheels comprising a drum closedat its outer head or end, a spider Within said a111, a ehieaoed boil;amending from said spider throng She outer'ciose' head of said drum andhaving nut on its outer en'ci baa:-

egainsi; the hea'ea of said (1mm, and

means for connecting said spider with the of a tIZICiJlOIl wheel.

